Hoisting apparatus.



UNITED STATES PATENT OFFICE.

JOHN A KEARNEY, OF NEWARK, NEW JERSEY, ASSIGNOR T0 GILLIS & GEOGHEGAN, OF NEW YORK, N. Y., A FIRM.

HOISTING APPARATUS.

Specification of Letters Patent.

Application filed January 30, 1913.

To all whom it may concern:

Be it known that I, JOHN A. KEARNEY, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented a certain new and useful Improvement in Hoisting Apparatus, of which the following is a specification.

The invention is based on an apparatus shown and described in Letters Patent to Louis 0. F orman, dated April 30, 1912, No, 1,024,885, and the object of the present invention is to increase the efiiciency of the previous apparatus by providing improved means for lifting and depositing the load to be handled.

The invention consists in certain novel features of construction and arrangement by which the above object is attained, to be hereinafter described and pointed out in the claims.

The accompanying drawings form a part of this specification and show the improved apparatus.

Figure l is an elevation, partly in vertical section, showing in full lines the apparatus extended for service, and in dotted lines the position assumed when partly collapsed. Fig. 2 is a plan or to view of the crane-arm or jib and its imme iately connected parts. The remaining figures are on a larger scale and show parts of the apparatus. Fig. 3 is a vertical section taken on the line 33 in Fig. 2, and partly in elevation. Fig. 4 is an elevation of a portion carrying the winding or hoisting mechanism. Fig. 5 is a corresponding vertical section, partly in elevation, taken on the line 55 in Fig. 4. Fig. 6 is a plan view of the winding mechanism, partly in horizontal section, the plane of section being indicated by the line 66 in Fig. 1. Fig. 7 is an elevation, partly in vertical section on the line 77 in Fig. 6, showing the brake. Fig. 8 is a plan view of the elevating mechanism, partly in horizontal section taken on the line 88 in Fig. 1.

Similar letters of reference indicate the same parts in all the figures.

A is a hollow post firmly set and supported in a suitable pit or hoistway below the street level, telescopically inclosing a tubular standard B in which is secured a core B having a rack 13 with its teeth presented to a long slot 6 extending vertically of the standard. In the upper part of the post is a similar but short slot or registering with the slot 7) and permitting the rack to be engaged by a toothed rack-Wheel C mounted on a shaft C supported in a two-part yoke D clamped upon the post. The shaft C also carries a gear-wheel C in mesh with a pinion C on a shaft 0 which latter is extended horizontally and squared to receive a crank L by which the gears and rack wheel may be turned and the standard thus raised or lowered. A pawl D mounted on the yoke and engaged with the teeth of the rackwheel C serves to support the standard in the elevated position, and a pin A thrust transversely through the post beneath the standard holds the latter in the fully elevated position, as described in the Letters Patent above referred to. At the upper end of the standard is a coupling B screwed thereon and receiving the screw-threaded lower end of an extension-piece B in axial alinement with the standard, serving as a support or vertical shaft for the vertical body portion of a T- shaped connection K loosely mounted on the extension-piece to swing horizontally and carrying in its horizontal branch a tubular crane-arm or jib K extending at a right angle from the standard and having a pulley K mounted in slots in its outer end. The upper face of the coupling B and adjacent face of the T-connection are provided with annular race-ways containing a series of antifriction balls K and the upper face of the T is similarly grooved to receive a series of balls K applied between the T and a cap 13 screwed upon the upper end of the extension-piece B, closing its upper end and serving as an adjusting means for the two sets of ball-bearings. A plate B secured upon the cap by a bolt B has angularly extending horizontal arms B provided with holes adapted to receive the hooked ends of rods B B secured to the wall of the building, not shown, above the sidewalk level and serving as braces for the upper end of the standard as will be understood. Thus arranged the arm or jib K may be easily turned to extend over the hoistway in raising a load, and swung over the sidewalk to deposit the load thereon or upon a suitable truck placed to receive it.

Inclosing the standard above the post and below the T is a sleeve E having an outwardly projecting annular flange on its lower end, carrying a hollow collar F encircling the sleeve and held thereon by a threaded collar or nut E screwed upon the upper end of the sleeve. Race-Ways are cut in the upper face of the flange E and the lower face of the collar to receive a series of antifriction balls E serving to permit the collar and its connected parts to rotate or swing horizontally on the sleeve.

The sleeve E is held to the standard B by a pin E mounted in a housing E on the flange E and thrust inwardly by a spring E to engage a hole b in the standard. cross-handle E on the projecting end of the pin facilitates withdrawal when requlred, and to guard against accidental disengagement an arm or bracket F is mounted on the collar F above the housing E adapted to.

receive an end of the handle when the latter is given a quarter turn and hold the pin E against outward movement until the handle is again released. The collar F is part of a horizontal frame comprising the outwardly extending arms F carrying the winding mechanism.

G is a shaft mounted in the arms and carrying a pinion G in mesh with a gearwheel H mounted on a second shaft H parallel with the shaft G, and carrying a winding-drum or spool H on which the hoisting cable J is wound. The latter is preferably a light wire rope extending from the drum H to and over the pulley K and provided at its free end with a hook J or other suitable grapple adapted to engage the load.

The pinion G is provided with a holding awl F and in order to control the lowering of the load a brake-drum G" is mounted on the shaft G, having a brake-band N of steel partially inclosing the drum and connected at the ends to pins N N in a lever N pivotally mounted at N on the underside of one of the arms F The inner face of the band N in contact with the drum carries a strip N of brake-lining adapted to insure the strong frictional contact required.

An overhung end of the shaft G is squared as at G to receive a crank L by which the winding mechanism may be rotated.

To hold the collar F and its arms in the desired position on the sleeve a pin F is employed similar to the pin E above described; it is mounted to slide in a housing F and is thrust inwardly into engagement with a hole 6 in the sleeve by the force of a spring F When the pin F is withdrawn by the handle F the collar and its winding mechanism may be swung in either direction horizontally, and the pin again engaged in a corresponding hole, not shown, to present the winding mechanism for convenient operation.

In colla sing the apparatus from the elevated con ition in Fig. 1, the rods 13 B are detached, the pin A removed and the standard lowered by the crank L until the collar F reaches the top of the post A, the latchpin A is then withdrawn and the standard further lowered, sliding freely through the collar, until the coupling B rests upon the upper face of the collar E The jib K may be swung into any convenient position. A reversal of the operation raises the standard B, the arm or jib K rising above the collar until the latch-pin E engages and lifts the winding mechanism as will be understood. The arrangement permits the winding mechv anism to be located at a convenient height above the sidewalk for easy operation while the jib K is enough higher to allow the load to be swung clear and deposited at any point within the range of the apparatus.

I claim:

1. In an apparatus of the character set forth, a hollow post, a standard arranged to slide telescopically therein, a jib at the upper end of said standard, mechanism for raising and lowering said standard in said post, a collar loosely inclosing said standard with liberty for the latter to slide therethrough, winding mechanism carried by said collar, and means for detachably engaging said collar with said standard.

2. In an apparatus of the character set forth, a hollow post, a tubular standard arranged to slide telescopically therein and having a vertical slot on one face, a jib at the upper end of said standard, a rack in said standard with its teeth presented to said slot, mechanism on said post constructed to engage said rack through said slot and to raise and lower said standard, a sleeve loosely inclosing said standard above said post, a flange on said sleeve, a collar loosely inclosing said sleeve and carrying hoisting mechanism, a collar above said collar and engaged with said sleeve, a series of antifriction balls between said collar and flange, means carried by said collar for detachably engaging said collar with said sleeve, and means for detachably engaging said sleeve with said standard.

3. In an apparatus of the character set forth, a vertically movable standard, a coupling on the upper end of said standard, an extension-piece in said coupling forming a continuation of said standard, a T having its vertical body portion loosely inclosing said extension-piece, a cap on the latter, and a jib carried by the horizontal branch of 120 said T.

4. In an ap aratus of the character set forth, a vertically movable standard, a coupling on the upper end of said standard, an extension-piece in said coupling forming 125 a continuation of said standard, a T having its vertical body portion loosel inclosing said extension-piece, a cap on t e latter, a series of antifriction balls between said T and coupling, a series of antifriction balls between said T and cap, and a jib carried by the horizontal branch of said T.

5. In an apparatus of the character set forth, a vertically movable standard, a coupling on the upper end of said standard, an extension-piece in said coupling forming a continuation of said standard, a T having its vertical body portion loosely inclosing said extension-piece, a cap on the latter, a jib carried by the horizontal branch of said T, a plate on said cap having arms adapted to support detachably engaged rods arranged to serve as braces for said standard.

6. In an apparatus of the character set forth, a vertically movable standard, a jib at the upper end of said standard, mechanism for raising and lowering said standard in said post, a sleeve loosely inclosing said standard above said post, a flange on said sleeve, a spring-pin in said flange ar- 20 ranged to engage in a hole in said standard, a cross-handle for said pin, a collar loosely inclosing said sleeve and carrying hoisting mechanism, a collar on said sleeve above said collar, and a projecting arm on said collar 26 adapted to serve with said cross-handle and prevent withdrawal of said pin from said hole.

In testimony that I claim the invention above set forth I afiix my signature, in 30 presence of two witnesses.

JOHN A. KEARNEY.

Witnesses:

J. O. PIOKARD, THOMAS WINSHIP. 

